Welcome to our dedicated page for SilverBox SEC filings (Ticker: SBXD), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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SilverBox Corp IV (NYSE:SBXD) filed an 8-K reporting a board transition effective June 25 2025.
Director Matthew Eilers resigned to avoid potential conflicts after joining an investment bank. The Board concurrently appointed Glenn Marino—a 30-year consumer-finance veteran and former Synchrony Financial CCO—as director and member of the Audit, Compensation, and Nominating & Governance committees.
- The Board designated Marino an “audit committee financial expert” under SEC rules.
- Standard indemnification executed; Marino is bound by the SPAC IPO letter to support the initial business combination.
- Eilers’ departure involved no disagreement regarding company policies.
No related-party transactions or family ties were disclosed.
SilverBox Corp IV (NYSE: SBXD) filed a Form 8-K on June 20, 2025 under Item 7.01 (Regulation FD Disclosure). The filing reiterates that SBXD and Parataxis Holdings LLC signed a non-binding letter of intent on June 9, 2025 regarding a potential business combination. The new disclosure attaches a press release (Exhibit 99.1) issued the same day by Parataxis Holdings announcing a definitive agreement to acquire a controlling interest in Bridge Biotherapeutics, Inc. (KOSDAQ: 288330). Parataxis intends to use this acquisition to establish an institutionally backed Bitcoin treasury company that would be listed on the South Korean public markets.
The 8-K expressly states that the information—including Exhibit 99.1—is being “furnished” rather than “filed”, meaning it is not subject to Section 18 liability and will not be incorporated by reference into SBXD’s Securities Act or Exchange Act filings. No financial statements, pro-forma data, or valuation terms are provided, and SBXD remains in the due-diligence stage: no definitive business-combination agreement has been executed yet.
SBXD advises shareholders that, if a definitive agreement is reached, a newly formed holding company (“PubCo”) together with SBXD and Parataxis Holdings will prepare a registration statement and proxy statement/prospectus, which will be mailed to SBXD shareholders and filed with the SEC. The company directs investors to review those future filings, along with SBXD’s Form 10-K for the year ended December 31, 2024, for detailed risk factors and ownership information.
The filing includes standard forward-looking-statement disclaimers highlighting risks such as potential termination of negotiations, regulatory approvals, listing uncertainties, and market demand for digital assets in South Korea. It also clarifies that the 8-K does not constitute an offer or solicitation related to any securities.
Key take-away for investors: The disclosure signals incremental progress toward a possible SPAC merger, but material deal terms, financial impacts, and closing conditions remain unknown. Until a binding agreement is signed and a registration statement is filed, SBXD’s transaction timeline and economics are speculative.
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